Beijing exports more than $300m worth of dual-use items - those with both commercial and military applications - to Russia every month, according to an analysis of Chinese customs data by the Carnegie Endowment think tank.
It says the list includes what the US has designated as “high priority” items, which are necessary for making weapons, from drones to tanks.
RUSI, a UK-based think tank has also cautioned about the potential use of Chinese satellite technology for intelligence on Ukraine’s front line.